The log below is from log when deploying a simple hello world EJB.  Seems your EJB does not get recognized.  Have you ever deployed a helloworld EJB before this shopping EJB ?   Can you send your src and exported jar as attachment for further diagnose ? 

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2008-12-30 15:37:42,323 INFO  [config] Configuring Service(id=Default Stateless Container, type=Container, provider-id=Default Stateless Container)
2008-12-30 15:37:42,323 INFO  [config] Configuring Service(id=Default Stateful Container, type=Container, provider-id=Default Stateful Container)
2008-12-30 15:37:42,323 INFO  [config] Configuring Service(id=Default BMP Container, type=Container, provider-id=Default BMP Container)
2008-12-30 15:37:42,323 INFO  [config] Configuring Service(id=Default CMP Container, type=Container, provider-id=Default CMP Container)
2008-12-30 15:37:42,323 INFO  [config] Configuring app: default/simpleEJB/1230622661698/jar

2008-12-30 15:37:42,542 INFO  [OpenEJB] Auto-deploying ejb HelloEJB: EjbDeployment(deployment-id=simpleEJB/HelloEJB)
2008-12-30 15:37:42,542 INFO  [OpenEJB] Auto-deploying ejb HelloStatefulEJB: EjbDeployment(deployment-id=simpleEJB/HelloStatefulEJB)

2008-12-30 15:37:42,573 INFO  [config] Loaded Module: default/simpleEJB/1230622661698/jar
2008-12-30 15:37:43,792 INFO  [startup] Assembling app: Y:\geronimo-tomcat6-javaee5-2.1.3\var\temp\geronimo-deployer52890.tmpdir\simpleEJB.jar

2008-12-30 15:37:43,807 INFO  [startup] Jndi(name=HelloEJBLocal) --> Ejb(deployment-id=simpleEJB/HelloEJB)
2008-12-30 15:37:43,807 INFO  [startup] Jndi(name=HelloEJBRemote) --> Ejb(deployment-id=simpleEJB/HelloEJB)
2008-12-30 15:37:43,807 INFO  [startup] Jndi(name=HelloStatefulEJBRemote) --> Ejb(deployment-id=simpleEJB/HelloStatefulEJB)
2008-12-30 15:37:43,807 INFO  [startup] Created Ejb(deployment-id=simpleEJB/HelloEJB, ejb-name=HelloEJB, container=Default Stateless Container)
2008-12-30 15:37:43,807 INFO  [startup] Created Ejb(deployment-id=simpleEJB/HelloStatefulEJB, ejb-name=HelloStatefulEJB, container=Default Stateful Container)

2008-12-30 15:37:43,807 INFO  [startup] Deployed Application(path=Y:\geronimo-tomcat6-javaee5-2.1.3\var\temp\geronimo-deployer52890.tmpdir\simpleEJB.jar)